<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>
<body>
<div id="vue_det">
    <h1>site : {{site}}</h1>
    <h1>url : {{url}}</h1>
    <h1>Alexa : {{alexa}}</h1>
</div>
<script type="text/javascript">
    // 我们的数据对象
    var data = { site: "菜鸟教程", url: "www.runoob.com", alexa: 10000}
    var vm = new Vue({
        el: '#vue_det',
        data: data
    })

    document.write(vm.$data === data) // true
    document.write("<br>") // true
    document.write(vm.$el === document.getElementById('vue_det')) // true

</script>

</body>
</html>